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环境准备
要使用 Ambari 部署 Hortonworks stack，您需要准备部署环境： 设置无密码 SSH 设置服务用户帐户 在集群和浏览器主机上启用 NTP 检查 DNS 和 NSCD 配置 iptables 禁用 SELinux 和 PackageKit 并检查 umask 值 下载并设置数据库连接器 为 Ranger 配置数据库实例 ... -
Java API
Iceberg Java API Tables The main purpose of the Iceberg API is to manage table metadata, like schema, partition spec, metadata, and data files that store table data. Table metad... -
Install Databases for HDF services
Installing and Configuring MySQL Installing and Configuring Postgres Using an Oracle Database When installing Schema Registry, SAM, Druid, and Superset, you require a relationa... -
参数优先级
参数优先级 例子 参数优先级 DolphinScheduler 中所涉及的参数值的定义可能来自三种类型： 项目级别参数 ：在项目管理中定义的项目级别参数 全局参数 ：在工作流保存页面定义时定义的变量 启动参数 ：在工作流启动页面定义的变量 上游任务传递的参数 ：上游任务传递过来的参数 本地参数 ：节点的自有变量，用户在“自定义参数”定义的变量，并... -
Cassandra
Description Key features Options host [string] keyspace [string] table [String] username [string] password [string] datacenter [String] consistency_level [String] fields [... -
Configuration
Spark Configuration Catalogs Spark adds an API to plug in table catalogs that are used to load, create, and manage Iceberg tables. Spark catalogs are configured by setting Spark ... -
Product Interoperability
Ambari 2.7.5 supports only HDP-3.1.5 and HDF-3.2.0 The Support Matrix tool provides information about: Operating Systems Databases Browsers JDK Use the following URL to det... -
Oracle Prerequisite
Due to limitations in Amazon RDS , the Ranger database user and tablespace must be created manually and the required privileges must be manually granted to the Ranger database use... -
Operators
String Specific Comparison Operators Data Setup Starts With Contains Ends With Regular Expressions Basic String Matching Case insensitive search The . Wildcard The * Wildcar... -
Config Management
Introduction Dataset Config Management Requirement Data Model Versioning Client library Config Store Current Dataset Config Management Implementation Data model Client appli...
